xref: /freebsd/crypto/heimdal/lib/roken/strtok_r.c (revision 57718be8fa0bd5edc11ab9a72e68cc71982939a6)
1 /*
2  * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * 3. Neither the name of the Institute nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include <config.h>
35 
36 #include <string.h>
37 
38 #include "roken.h"
39 
40 #ifndef HAVE_STRTOK_R
41 
42 ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
43 strtok_r(char *s1, const char *s2, char **lasts)
44 {
45   char *ret;
46 
47   if (s1 == NULL)
48     s1 = *lasts;
49   while(*s1 && strchr(s2, *s1))
50     ++s1;
51   if(*s1 == '\0')
52     return NULL;
53   ret = s1;
54   while(*s1 && !strchr(s2, *s1))
55     ++s1;
56   if(*s1)
57     *s1++ = '\0';
58   *lasts = s1;
59   return ret;
60 }
61 
62 #endif /* HAVE_STRTOK_R */
63